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Condition for successful right-handed Majorana Sneutrino curvaton.

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Condition for successful right-handed Majorana Sneutrino curvaton. / McDonald, John.
In: Physical Review D, Vol. 70, No. 6, 063520, 16.09.2004.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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McDonald J. Condition for successful right-handed Majorana Sneutrino curvaton. Physical Review D. 2004 Sept 16;70(6):063520. doi: 10.1103/PhysRevD.70.063520

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@article{63a3585d1dcf48ff94f1a96195929237,
title = "Condition for successful right-handed Majorana Sneutrino curvaton.",
abstract = "We consider the conditions which must be satisfied for a Majorana RH sneutrino, a massive right-handed (RH) sneutrino associated with the seesaw mechanism of Majorana neutrino masses, to play the role of the curvaton. Planck-scale suppressed nonrenormalizable terms in the RH neutrino superpotential must be eliminated to a high-order if the RH sneutrino curvaton is to dominate the energy density before it decays, which can be achieved via an R-symmetry which is broken to R-parity by the Giudice-Maseiro mechanism. In order to evade thermalization of the curvaton condensate, one RH neutrino mass eigenstate must have small Yukawa couplings, corresponding to a lightest neutrino mass mnu1<~10-3 eV. A time-dependent lepton asymmetry will be induced in the RH sneutrino condensate by the Affleck-Dine mechanism driven by SUSY breaking B-terms associated with the RH neutrino masses. Requiring that the resulting baryon asymmetry and isocurvature perturbations are acceptably small imposes an upper bound on the RH neutrino mass. We show that a scenario consistent with all constraints is obtained for a RH neutrino mass in the range 102-104 GeV when the RH sneutrino decay temperature is greater than 100 GeV and lightest neutrino mass mnu1[approximate]10-3 eV. Larger RH neutrino masses are possible for smaller mnu1. The resulting scenario is generally consistent with a solution of the cosmic string problem of D-term inflation.",
keywords = "cosmology, neutrino mass, sparticles, axiomatic field theory, meson field theory, supersymmetry, supersymmetric field theory, spontaneous symmetry breaking, neutrinos",
author = "John McDonald",
note = "{\textcopyright} 2004 The American Physical Society",
year = "2004",
month = sep,
day = "16",
doi = "10.1103/PhysRevD.70.063520",
language = "English",
volume = "70",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "6",

}

RIS

TY - JOUR

T1 - Condition for successful right-handed Majorana Sneutrino curvaton.

AU - McDonald, John

N1 - © 2004 The American Physical Society

PY - 2004/9/16

Y1 - 2004/9/16

N2 - We consider the conditions which must be satisfied for a Majorana RH sneutrino, a massive right-handed (RH) sneutrino associated with the seesaw mechanism of Majorana neutrino masses, to play the role of the curvaton. Planck-scale suppressed nonrenormalizable terms in the RH neutrino superpotential must be eliminated to a high-order if the RH sneutrino curvaton is to dominate the energy density before it decays, which can be achieved via an R-symmetry which is broken to R-parity by the Giudice-Maseiro mechanism. In order to evade thermalization of the curvaton condensate, one RH neutrino mass eigenstate must have small Yukawa couplings, corresponding to a lightest neutrino mass mnu1<~10-3 eV. A time-dependent lepton asymmetry will be induced in the RH sneutrino condensate by the Affleck-Dine mechanism driven by SUSY breaking B-terms associated with the RH neutrino masses. Requiring that the resulting baryon asymmetry and isocurvature perturbations are acceptably small imposes an upper bound on the RH neutrino mass. We show that a scenario consistent with all constraints is obtained for a RH neutrino mass in the range 102-104 GeV when the RH sneutrino decay temperature is greater than 100 GeV and lightest neutrino mass mnu1[approximate]10-3 eV. Larger RH neutrino masses are possible for smaller mnu1. The resulting scenario is generally consistent with a solution of the cosmic string problem of D-term inflation.

AB - We consider the conditions which must be satisfied for a Majorana RH sneutrino, a massive right-handed (RH) sneutrino associated with the seesaw mechanism of Majorana neutrino masses, to play the role of the curvaton. Planck-scale suppressed nonrenormalizable terms in the RH neutrino superpotential must be eliminated to a high-order if the RH sneutrino curvaton is to dominate the energy density before it decays, which can be achieved via an R-symmetry which is broken to R-parity by the Giudice-Maseiro mechanism. In order to evade thermalization of the curvaton condensate, one RH neutrino mass eigenstate must have small Yukawa couplings, corresponding to a lightest neutrino mass mnu1<~10-3 eV. A time-dependent lepton asymmetry will be induced in the RH sneutrino condensate by the Affleck-Dine mechanism driven by SUSY breaking B-terms associated with the RH neutrino masses. Requiring that the resulting baryon asymmetry and isocurvature perturbations are acceptably small imposes an upper bound on the RH neutrino mass. We show that a scenario consistent with all constraints is obtained for a RH neutrino mass in the range 102-104 GeV when the RH sneutrino decay temperature is greater than 100 GeV and lightest neutrino mass mnu1[approximate]10-3 eV. Larger RH neutrino masses are possible for smaller mnu1. The resulting scenario is generally consistent with a solution of the cosmic string problem of D-term inflation.

KW - cosmology

KW - neutrino mass

KW - sparticles

KW - axiomatic field theory

KW - meson field theory

KW - supersymmetry

KW - supersymmetric field theory

KW - spontaneous symmetry breaking

KW - neutrinos

U2 - 10.1103/PhysRevD.70.063520

DO - 10.1103/PhysRevD.70.063520

M3 - Journal article

VL - 70

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 6

M1 - 063520

ER -